Natural green color comes together perfectly with bold geometric design in the rhyolite 18x25mm faceted trapezoid beads from Dakota Stones. Available in 8-inch strands, these beads are shaped like trapezoids with large cut facets. This stone is also known as rainforest jasper thanks to its mossy green, brown and gray colors. Rhyolite is an igneous rock with high silica content and is chemically identical to granite. Mined in the USA and Africa, rhyolite is said to fortify the body's natural resistance and give it strength. Because these beads are made from natural material, every one displays a unique color pattern. Each bead is its own work of art! Dakota Stones offers high-quality gemstones that are all useable in jewelry designs because every bead is checked to make sure they are cut and drilled correctly, that the finish is right and that the beads look distinct to their stone type.